The goal of this clinical research study is to find the highest tolerable dose of DNX-2401 that can be injected directly into brain tumors and into the surrounding brain tissue where tumor cells can multiply. A second goal is to study how the new drug DNX-2401 affects brain tumor cells and the body in general.

Each cohort of three subjects each sequentially assigned to escalating doses of DNX-2401, with acceptable grade of neurotoxicity Common Toxicity Criteria (CTC) < grade 3, related to the study drug, and according to standard Gehan phase I dose-escalating criteria for toxicity.

Patients must show unequivocal evidence for tumor recurrence or progression by MRI scan within 15 days prior to Day 0/Baseline procedure after failing prior surgical resection, biopsy, chemotherapy or radiation

For patients entered in Group A (see Treatment Plan) tumors must be accessible for stereotactic injection. Tumors must be between 1.0 - 5.0 cm in diameter

For patients entered in Group B (see Treatment Plan) tumors must be surgically resectable, and surgical resection must be indicated at the time of baseline evaluation. Tumors must be >1.0 cm in diameter.

Patients will consent to have a biopsy taken at the time of the stereotactic injection to confirm the presence of malignant glioma (based on frozen section) before injection of DNX-2401

For each patient there must be a consensus between the physician investigators in this study that injection will not deliver DNX-2401 into the ventricular system. Patients must have a stable steroid regimen for at least 1 week prior to DNX-2401 administration

Patients may or may not have had prior chemotherapy

Patients must be willing and able to give informed consent

Age > /= 18 years

Patients must have a Karnofsky performance status greater than or equal to 70

Patients must have recovered from the toxic effects of prior therapy (i.e., CTC grade 1 or less). For example, they must be at least two weeks after vincristine, 6 weeks after nitrosoureas, and 3 weeks after procarbazine or temozolomide administration

This study was designed to include women and minorities, but was not designed to measure differences of intervention effects. Males and females will be recruited with no preference to gender

No exclusion to this study will be based on race. Minorities will actively be recruited to participate. The malignant glioma patient population treated at MDACC over the past year is as follows: American Indian or Alaskan Native - 0, Asian or Pacific Islander - <2%, Black, not of Hispanic Origin - 3%, Hispanic - 6%, White, not of Hispanic Origin - 88%, Other or Unknown - 2%, Total - 100%

Exclusion Criteria:

Any radiotherapy within 4 weeks prior to date of DNX-2401 administration.

Evidence of bleeding diathesis or use of anticoagulant medication or any medication that may increase the risk of bleeding that cannot be stopped prior to surgery. If the medication can be discontinued , based on the clinical judgment of the surgeon, prior to DNX-2401 injection then patient may be eligible.

History or current diagnosis of any medical or psychological condition that in the Investigator's opinion, might interfere with the subject's ability to participate or inability to obtain informed consent because of psychiatric or complicating medical problems

Female who is pregnant and/or nursing. Because of the potential risk of a recombinant virus containing a gene involved in cellular growth regulation and differentiation which could potentially affect a developing fetus or growing infant, females who are pregnant, at risk of pregnancy, or breast feeding a baby during the study period are excluded

Tumor position that, in the Investigator's opinion, would pose the risk of penetration of the cerebral ventricular system during injection with study drug. If, during the DNX-2401injection procedure, penetration of the ventricular system is suspected or confirmed, DNX-2401 administration will be aborted

Vaccinations of any kind within 30 days prior to Delta-24-RGD-4C administration

Current diagnosis of other cancer except curative cervical cancer in situ, basal or squamous cell carcinoma of the skin. Patients with a history of another cancer, but who are cancer free for a minimum of three years remain eligible

History of encephalitis, multiple sclerosis, other CNS infection or primary CNS disease that would interfere with subject evaluation

Patients with history of prior gene transfer therapy or prior therapy with cytolytic virus of any type, especially DNX-2401

Males or females who refuse to use a double-barrier form of birth control during the study and for up to 6 months after injection with DNX-2401

Contacts and Locations

Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study.
To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below.
For general information, see Learn About Clinical Studies.

Please refer to this study by its ClinicalTrials.gov identifier: NCT00805376